I'm in the correct region. The GPS just gets off track more than it should. For example if I am detoured off the main road due to construction then the GPS freaks out because the detour is not on its map. When I finally get back on the main road it's still way off in the field somewhere and never makes it back to the road. Another time I was on some road not on the map. When I got back to a main road it couldn't get back on track. We're continually having to readjust or recalibrate the GPS. Sometimes several times a day on a long trip. Something is not right. In the secret menu there are options such as "location" "gps" etc. Could there be something in there that could fix it? This is the screen that has the override fuction.